package com.wumao.util;

import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;

/**
 * @author Gaowumao
 * @Decripted
 * @Email none-j@qq.com
 * @create 2021-04-15 19:15
 */
public class MD5Utils {
    /*
    MD5密码加密
    *@Param str 要加密的字符串
    * @return  加密后的字符串
    *
    * */

    public static String code(String str){
        try{
            MessageDigest md = MessageDigest.getInstance("MD5");
            md.update(str.getBytes());
            byte[] byteDigest = md.digest();
            int i;
            StringBuffer buf = new StringBuffer("");
            for (int offset = 0;offset< byteDigest.length;offset++){
                i=byteDigest[offset];
                if (i<0)
                    i+=256;
                if (i<16)
                    buf.append("0");
                buf.append(Integer.toHexString(i));
            }
            //32位加密
            return buf.toString();
            //16位加密
//            return buf.toString().substring(8,24);
        } catch (NoSuchAlgorithmException e) {
            e.printStackTrace();
            return null;
        }
    }

//    public static void main(String[] args) {
//        System.out.println(code("admin"));
//    }
}
